William M Ciesla. (1994). FAO forestry paper N.120: Decline and dieback of trees and forest: a global overview. Rome: FAO.
استشهاد بنمط شيكاغوWilliam M Ciesla. FAO Forestry Paper N.120: Decline and Dieback of Trees and Forest: A Global Overview. Rome: FAO, 1994.
MLA استشهادWilliam M Ciesla. FAO Forestry Paper N.120: Decline and Dieback of Trees and Forest: A Global Overview. Rome: FAO, 1994.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.